Sen.-designate Cowan sworn-in

Bijschrift:UNITED STATES - FEBRUARY 7: Vice President Joe Biden (R) conducts the mock swearing-in ceremony for Sen.-designate William Cowan, D-Mass. Cowan was formally sworn-in moments earlier on the Senate floor. Secretary of State John Kerry (L1) and Sen. Elizabeth Warren, D-Mass. (L2), attending the ceremony. Cowan's children, Miles and Grant, watch the proceedings. (Photo By Chris Maddaloni/CQ Roll Call)

Bijschrift:

UNITED STATES - FEBRUARY 7: Vice President Joe Biden (R) conducts the mock swearing-in ceremony for Sen.-designate William Cowan, D-Mass. Cowan was formally sworn-in moments earlier on the Senate floor. Secretary of State John Kerry (L1) and Sen. Elizabeth Warren, D-Mass. (L2), attending the ceremony. Cowan's children, Miles and Grant, watch the proceedings. (Photo By Chris Maddaloni/CQ Roll Call)